Had a chat with a retired A&P at the airport diner yesterday that really got me thinking about how we test gear.

He was telling me about a time in the 90s when his whole shop spent two days trying to find a fault in a nav system. Turns out their test set was out of cal by a tiny bit, just enough to give false readings. He said, 'We were so sure the box was bad, we never thought to question the tester.' It hit different because I just spent a morning chasing a weird voltage drop on a comm radio, and my first thought was the LRU, not my multimeter. Made me realize I almost never send my personal tools out for calibration, just the shop's official stuff. How often do you guys actually check your own meters and testers? Got a schedule or just wait for something to feel off?

2 comments

2 Comments

emery2901h ago

Heard a buddy fried a board trusting his old meter.

rowanhernandez44m ago

Yeah, my old meter lied to me once too and it cost me a whole PSU, lol.